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QX50 08+ Fuel Grade

Discussion in 'QX50 Chat' started by byee, Oct 6, 2017.

  1. byee

    byee Member

    17
    1
    Vancouver, BC
    2017 QX50
    B
    I recently bought a 2017 QX50 and wondering if it’s mandatory to run only premium fuel in the vehicle?

    Has anyone tried regular or mid grade fuel on their QX50? Any ill effects running lower grade fuels through the engine?

    Thoughts???
     
    Last edited: Oct 6, 2017

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  2. zebra555

    zebra555 www.tuner-store.com iS VIP

    10,985
    513
    Miami
    2004 Infiniti FX35 Supercharged
    Garages:
    2
    You can run regular, but you probably will save a little money running premium since your MPG will be better.
     
  3. OP
    OP
    byee

    byee Member

    17
    1
    Vancouver, BC
    2017 QX50
    B
    What’s the mileage difference? Does premium provide higher mileage??
     
  4. RAGTPZ

    RAGTPZ Member

    207
    2
    Cincinnati, Ohio
    2010 FX50S
    Randy
    If you run regular gas your car's ECM will retard the timing on the engine so that detonation will not occur due to the lower octane which will result in less performance = less fuel mileage. Running premium fuel is only about what, $6-$7 more per tank? Stick with what Infiniti intended to run the car with.
     
    MTN FX likes this.
  5. Old Blue

    Old Blue Member

    204
    32
    Spring TX
    FX 37 rwd
    Tom
    What he said...:cool:
     
  6. mortimus maximus

    mortimus maximus Member

    3
    0
    canada
    ex37
    Martin
    New owner of an awd ex37. I am getting an average of 11.5/100 and have seen a best of 8.6/100.for fuel economy.What are you all getting.On a aside note in the central display under fuel economy historyhow do you get the past previous bars to populate.I only have the one on the far right and the one next to it.All others show nothing. TTYL